Lily Allen Gives Birth to a Baby Girl! And Her Name Is...

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Time to "smile"!

British singer Lily Allen and her husband Sam Cooper have welcomed a baby girl, according to Us Weekly. Their newborn daughter's name is Marnie Rose Cooper, and this is the couple's second child together.

The 27-year-old Lily took to Twitter on January 10 to announce the happy news. "Quite overwhelmed by all the well wishing going on. THANKYOU everybody x x x," she wrote.

The couple's first child, Ethel Mary, was born in November 2011, just over a year ago.

When the couple learned of the second pregnancy, they were a bit taken a back.

"It was a surprise but Lily and Sam are thrilled," a source said at the time. "The pair of them have loved every minute of parenthood so far and wanted to expand their brood quickly. So it's great timing."